Creating a correct invoice isn’t difficult, but there are some mandatory elements. These are important for your own records and your client’s. Whether you’re a new freelancer or experienced: a clear invoice ensures quicker payment and fewer tax issues.

Mandatory elements on your invoice

• Your company name and address: Use the name registered with the Chamber of Commerce.
• Your client’s name and address: Make sure this is accurate, especially for business clients.
• Your VAT number: If you have an exemption, mention it.
• Chamber of Commerce number: Required if you’re registered.
• Invoice number: Must be unique and sequential.
• Invoice date: The date you created the invoice.
• Date of service or delivery: When did the work take place?
• Description of the work: Be specific. For example: “Redesigned homepage.”
• Amount excluding VAT, VAT amount, and total including VAT.

Make it easy for yourself

With InvoiceTimer, you can easily create professional invoices that meet all legal requirements. No need to remember fields—everything is included in the template. Best of all: convert your tracked time into an invoice in one click.

Extra tips

• Use a consistent template for a clean, professional look.
• Number invoices logically, e.g., 2025-001, 2025-002, etc.
• Always send your invoice as a PDF. It looks professional and cannot be altered easily.

Invoicing doesn't have to be hard

You don’t need to be an accountant to send accurate invoices. With clarity and structure, you’re already halfway there. Tools like InvoiceTimer help reduce errors and save time.

Did you know you can invoice unlimited projects for only €2.99/month with InvoiceTimer? Start your free trial today and see how easy it can be!